Flexible bifacial amorphous Si quintuple‐ and sextuple‐junction solar cells for Internet of Things devices

Abstract

x :H sextuple-junction solar cells were prepared by the PE-CVD. The solar cell has a structure in which both sides are sandwiched between ITO layers, and the structure allows light irradiation from both sides.A total of 49 cells having an area of 0.25 cm 2 , 0.5 cm 2 , and 1 cm 2 was fabricated on a 10 cm × 10 cm substrate. The distribution of open-circuit voltage, V oc , under low illu-

Progress and challenges on scaling up of perovskite solar cell technology

“…The MJ approach is certainly not new in the PV community. In fact, it has been intensively investigated for thin-film Si 245,246,[255][256][257][247][248][249][250][251][252][253][254] and III-V PV technologies [258][259][260][261][262][263][264][265][266] . It consists of two or more sub-cells that absorb light of different energies.…”

Cathode luminescence analysis of Cu(In,Ga)Se2 solar cells treated with thiourea solution

“…1,2) These features make the thin-film solar cell technology suitable for new applications such as power sources for Internet-of-Things devices. 3,4) Among the various absorber candidates for thin-film solar cells, Cu(In,Ga)Se 2 (CIGS) is one of the most promising. Despite being a polycrystalline material, conversion efficiencies up to 23.35% have been achieved, 5) which is comparable to those achieved with the market-dominant multicrystalline silicon absorber.…”